MapD Draw is supporting touch events for iPad/iPad Pro

[chinmaydalvi]

:beetle: If bug

• [ ] Operating System and version: iPad OSX 12.X
• [ ] Browser and version: Chrome Safari Firefox
• [ ] Lasso Tool is not working on Touch devices like iPad and iPad Pro etc. Basic functionality for touch events are missing in MapDDraw Library itself. Without Basic touch events in MapD Draw, we cant provide touch support for Lasso Tool.
• [ ] First, we need to add touch events support for MapDDraw Library and then we need to add touch support in custom code of Lasso Tool example which is there in the mapd-charting library as Lasso Tool is created on top of the MapD draw Library
• [ ] Description of issue: I refer the following example to implement the Lasso Tool in our project. https://omnisci.github.io/mapd-charting/example/example5.html

After implementing in our project, I found that the Lasso Tool is not working on Touch devices like iPad, iPad Pro, etc.